More

By Kate Kelland LONDON, Oct 1- Extending treatment with Roche's. Analysts had said the Swiss firm, the world's biggest maker of cancer drugs, could lose up to $1.5 billion in revenue from the blockbuster medicine in the medium term if six months treatment had been shown to be just as effective.

*Nippon Yusen, Daido Steel cut earnings guidance. *China official PMI, Japanese manufacturing sentiment weak. TOKYO, Oct 1- The Nikkei share average fell to its lowest close in three weeks on Monday, hurt by downbeat economic data from Japan and China as well as a smattering of profit warnings from local companies like shipper Nippon Yusen KK.

SYDNEY, Oct 1- Australian shares finished flat on Monday, after data showing that while China's manufacturing sector had improved somewhat in September, it remained in contraction, heightening investors' worries about weak global economic growth.

Oct 1- The following are the top stories on the New York Times business pages on Monday. *A tax break for wage earners for which the White House campaigned hard last winter now finds little support in Washington, as Congress struggles with deficits.

The prompt October/November spread climbed $1.25 to a backwardation of $10.25 a tonne, the highest in more than two weeks, according to Reuters data. Strong gasoline demand in the United States will see more naphtha being reformed into the transport fuel, instead of being sent to Asia.

Singapore shares fell, largely in line with regional markets, after the latest survey of factory managers showed China's economy is seeing a seventh straight quarter of slowing growth. One of the biggest decliners on the Singapore bourse was Wilmar International Ltd, which eased as much as 2.2 percent to S $3.18.

Oct 1- The U.S. Supreme Court, back in session today after its summer recess, is expected to take up a closely watched case that could help it decide whether American judges are empowered to hear lawsuits over human rights atrocities abroad.

NEW YORK-- American Airlines says a Boston to Miami flight had to make an emergency landing at JFK airport over the weekend due to a row of dislodged seats. The unit of AMR Corp. said in a statement that passengers in the affected row were moved to three other seats. Passengers aboard the flight were placed on another aircraft for the trip to Miami.